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| author | Harry Liebel <Harry.Liebel@arm.com> | 2014-05-01 14:09:16 +0100 |
|---|---|---|
| committer | Harry Liebel <Harry.Liebel@arm.com> | 2014-05-19 14:28:53 +0100 |
| commit | 36eb6a755245e4eb0a40567783db6234f9f20d3f (patch) | |
| tree | 2fd43094d3678a9e52faa652a6b3385a3dde5a84 | |
| parent | c5c9b69c132c823aabc1e29c2ff6f30323c85483 (diff) | |
Improve BL3-0 documentation
Provide some information about the expected use of BL3-0.
Fixes ARM-software/tf-issues#144
Change-Id: I5c8d59a675578394be89481ae4ec39ca37522750
| -rw-r--r-- | docs/firmware-design.md | 9 | ||||
| -rw-r--r-- | tools/fip_create/fip_create.c | 2 |
2 files changed, 10 insertions, 1 deletions
diff --git a/docs/firmware-design.md b/docs/firmware-design.md index a40ddac..76c27f7 100644 --- a/docs/firmware-design.md +++ b/docs/firmware-design.md @@ -219,6 +219,15 @@ access to access controlled components. On the Base FVP a TrustZone controller abstraction layer is initialized which is used to load further bootloader images. +#### BL3-0 (System Control Processor Firmware) image load + +Some systems have a separate System Control Processor (SCP) for power, clock, +reset and system control. BL2 loads the optional BL3-0 image from platform +storage into a platform-specific region of secure memory. The subsequent +handling of BL3-0 is platform specific. Typically the image is transferred into +SCP memory using a platform-specific protocol. The SCP executes BL3-0 and +signals to the Application Processor (AP) for BL2 execution to continue. + #### BL3-1 (EL3 Runtime Firmware) image load BL2 loads the BL3-1 image from platform storage into a platform-specific address diff --git a/tools/fip_create/fip_create.c b/tools/fip_create/fip_create.c index c97204a..d1802b7 100644 --- a/tools/fip_create/fip_create.c +++ b/tools/fip_create/fip_create.c @@ -53,7 +53,7 @@ uuid_t uuid_null = {0}; * const char* format_type_str[] = { "RAW", "ELF", "PIC" }; */ -/* Currently only BL2 and BL31 images are supported. */ +/* The images used depends on the platform. */ static entry_lookup_list_t toc_entry_lookup_list[] = { { "Trusted Boot Firmware BL2", UUID_TRUSTED_BOOT_FIRMWARE_BL2, "bl2", NULL, FLAG_FILENAME }, |